八年級英語下冊Unit5 過去進行時語法教學(xué)課件

過去進行時1 含 義：（概念） 表示過去某個時刻正在進行的動作。（或過去一段時間正在進行的動作）2. 句子結(jié)構(gòu): ： be (was/were) + doing即：主語 + was/were + doing sth. + 時間狀語 3. 時間狀語詞:at 8 oclock last night/this time yesterday /at 5:00 yesterday afternoon/at that time, then 等連用( 或者用另一動作來表示過去的時間) 表示過去某個時刻正在進行的動作。例 句： What were you doing at nine last night? 昨晚九點你正在干什么？ I was taking a shower at nine last night. 昨晚九點我正在洗澡.They were playing basketball at 5 oclock yesterday afternoon. 昨天下午五點他們在打籃球。 ：表示在過去某一時間內(nèi)正在進行的動作。 She was writing a letter when I came in. 我進來時，她正在寫信。 The barber was cutting my hair when they arrived. 他們到達時，理發(fā)師正在給我剪頭發(fā)。 What were they doing at 10:30Last Monday ?They were running. What were you doing at 10: 10 yesterday morning?I was going shopping. Where was she at 9:00 yesterday?I think she was in/atShe was sweeping the floor at that time.at 9:00 last night Tom What _ Tom _ at 7:30 this morning?She _ _ _ at 7:30 this morning.was doingwas cooking breakfast One point What _ they _ from 8 to 9 last night?They_from 8 to 9 last night.were doingwere talking on the phoneOne point What was Alice doing when I got out of the shower from the bathroom?She was playing the piano. Talk about the picturesWhat were they doing yesterday afternoon?1 2 3 I wasWe were cooking a meal.playing volleyball.having a PE class.watching TV.working in the chemistry lab.Sweeping the floor.making a model .feeding my dog.What were you doing last night?last Saturday?at ten oclock?yesterday morning?at noon yesterday?Yesterday afternoon? Pairwork:Patterns:A: What were you doing at nine oclock last Sunday morning?B: I was sleeping. How about you?A: I was doing my homework.B: You are kidding when 和while的用法區(qū)別1.when 既 指 時 間 點 ， 也 可 指 一 段 時 間 ; while只 指 一 段 時 間 . 2.when 說 明 從 句 的 動 作 和 主 句 的 動 作 可 以 是 同時 ， 也 可 以 是 先 后 發(fā) 生 ； while 則 強 調(diào) 主 句 的 動 作 在 從 句 動 作 的 發(fā) 生 的 過程 中 或 主 從 句 兩 個 動 作 同 時 發(fā) 生 。 When the UFO landed, the boy was walking down the street. =While the boy was walking down the street, the UFO landedMy mother was cooking dinner while my father was watching TV. (1) “當(dāng)?shù)臅r候”,如后面連接的動詞為進行時態(tài),則用while多于用when。而when通常與瞬間性動詞或延續(xù)性不強的動詞連用。(2) 如果while前后的動詞都是進行時態(tài),while可譯為“與此同時” I was reading while my brother was drawing. A: What were you doing when the traffic accident happened?B: We were having a party.traffic accident What were they doing when the plane took off?They were swimming in the river.take off What was Alice doing when I got out of the shower from the bathroom?She was playing the piano. 過去進行時著重描述當(dāng)時正在持續(xù)進行的動作，它的特點是：暫時，持續(xù)和未完成，強調(diào)過程；一般過去時表示發(fā)生過的動作或存在的狀態(tài)，即表示動作發(fā)生過，而且已經(jīng)結(jié)束了，強調(diào)結(jié)果。 過去進行時側(cè)重表示動作延長的時間長度; 一般過去時表示過去某時發(fā)生過某事，側(cè)重說明事實。 He _ a letter last night. （過程描寫，他一直寫，不一定完成） He _ a letter last night and posted it this morning （只說明他寫了的事實，動作已結(jié)束）was writingwrote相同的過去時間可能會有不同時態(tài) 注：下列幾類動詞通常不用過去進行時。 表示狀態(tài)的動詞 be； 感官動詞：feel, hear, see, smell, taste等; 表示思維或心理狀態(tài)的動詞：believe (認(rèn)為), forget, consider, know, remember, hope, wish, want 等； 表示所屬關(guān)系的動詞：belong, have, own, hold (容納)等。 ExercisesChoose “when” or “while” to fill in the blanks. (1)I was walking in the street _ the accident happened. (2)_ you have a meeting, you should turned off your mobile phone. (3)_ you have PE class, you should wear sports shoes. (4)_ I was doing my homework, the telephone rang. (5)_ it was raining, the plane took off. (6)_ the teacher was speaking to class, Nick stood up suddenly. whenwhenwhenwhilewhilewhile 用所給動詞的適當(dāng)形式填空：1. We _ (wash) our clothes at six yesterday evening.2. While Ann _ (talk) with her desk mate, the teacher came in.3. Look! Mary _ (clean) the room.4. What _ you _ (talk) about just now?-We were talking about the movie.5. They _ (move) to Paris last month. 6. He _ (read) a novel from 8 to 12 yesterday morning.7. What _ he _ (do )at five oclock yesterday afternoon.8. He _ (watch) TV when I came in.9. She _ (do) her homework while her mother _ (cook).10. He _ (wait) for me when the train arrived. Summary: 過 去 進 行 時 的 構(gòu) 成 ：1.概 念 :表 示 過 去 某 個 時 刻 或 過 去 一 段 時 間正 在 進 行 的 動 作 .2.公 式 :主 語 +was/were+doing sth +時 間狀 語3.指 示 詞 :then, at that time, once, 等 連 用 ,或 者 用 另 一 動 作 來 表 示 過 去 的 時 間 .